Home / 3,629.28-5,009.12-2,138.48

Finding the Fourth Proportional to 3,629.28, 5,009.12 and 2,138.48

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Solution

The fourth proportional to 3,629.28, 5,009.12 and 2,138.48 is: 2,951.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,629.28 : 5,009.12 = 2,138.48 : x
  2. Step 2: Convert to fraction form
    3,629.28/5,009.12 = 2,138.48/x
  3. Step 3: Cross multiply
    3,629.28x = 5,009.12 × 2,138.48
  4. Step 4: Simplify right side
    3,629.28x = 10,711,902.94
  5. Step 5: Solve for x
    x = 10,711,902.94/3,629.28
  6. Step 6: Final answer
    x = 2,951.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.